Thomas O'Brien, MPS, ATC, CES joined the Fordham Sports Medicine staff in August 2018 and was promoted to associate athletic trainer in January of 2020. He is responsible for men's basketball and golf.

O'Brien came to Fordham after two years as a graduate assistant athletic trainer at St. John's University, where he provided care and treatment for the women's volleyball and men's tennis programs.  He also assisted with offseason coverage of the baseball, softball, and soccer teams at St. John's, while serving as a game day athletic trainer for men's basketball games at Carnesecca Arena and Madison Square Garden.

On top of his work at St. John's, O'Brien interned with the Long Island Nets of the NBA G-League and served as the host athletic trainer for the 2017 BIG EAST Indoor Track & Field Championship, held at the Ocean Breeze Athletic Complex on Staten Island.

O'Brien is NATA Board of Certification Certified, while also being a certified Corrective Exercise Specialist.  He graduated from Dominican College in 2016 with a degree in Athletic Training, while receiving his Master's degree in Sports Management from St. John's in 2018.